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Leno4ka [110]
2 years ago
15

The school library has 36 shelves of books . Each shelf can hold 42 books . How many books can the shelves in the library all to

gether ?
Mathematics
2 answers:
Agata [3.3K]2 years ago
8 0

Answer:1,512

Step-by-step explanation:

Since they are asking for the total number of books you multiply the number of shelves by the number of books each shelf can hold. 36x42

eduard2 years ago
4 0

Answer:

There are 1,512 books in all.

Step-by-step explanation:

All we need to do is multiply the number of books by the number of shelves.

So:

42 × 36 = 1,512.

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Find two numbers with a sum of 20 and a difference of 14
sergey [27]

Find two numbers with a sum of 20 and a difference of 14


Make two equations

X+Y=20

X-Y=14


Now add x since y cancels out and add 20+14 To end up with

2x=34


Now divide 2 both sides to get x alone

2x/2=34/2


X=17


Now substitute x answer to first equation and solve for y

17+y=20


Subtract 17 both sides

Y= 3

Your two numbers are

3 and 17

4 0
3 years ago
Rachel has 60 scones. She sells them to Robbie, Cameron, Louis, Tom and Charlie in that order. Each customer buys more scones th
Korvikt [17]
Robbie bought the smallest amount. Let's use x for that amount.
Let's use n for amount that each following customer increases.

We have:
Robbie=x
Cameron=x+n
Louis=x+n+n
Tom=x+n+n+n
Charlie=x+n+n+n+n

We know that they bought total of 60 scones.
Robbie + Cameron + Louis + Tom + Charlie = 60
x + x+n + x+n+n + x+n+n+n + x+n+n+n+n = 60
5x + 10n = 60 /:5
x + 2n = 12

We are also given this information:
(Robbie + Cameron) = 3/7 * (Louis + Tom + Charlie)
We insert the equations from above:
(x + x+n) = 3/7 * (x+n+n + x+n+n+n + x+n+n+n+n) 
2x + n = 3/7 * (3x + 9n) /*7
14x + 7n = 3* (3x + 9n)
14x +7n = 9x + 27n
We take everything on the left side.
14x + 7n - 9x - 27n = 0
5x - 20n = 0/:5
x - 4n = 0

Now we have two equations:
x + 2n = 12
x - 4n = 0
We solve second one for x and insert it into first one.
x + 2n = 12
x = 4n

4n + 2n =12
6n = 12 /:6
n = 2
x=4*2
x=8


Now we can solve for the amount for each customer.
Robbie=x = 8
Cameron=x+n = 8 + 2 = 10
Louis=x+n+n = 8 + 2 + 2 = 12
Tom=x+n+n+n = 8 + 2 + 2 + 2 = 14
Charlie=x+n+n+n+n = 8 + 2 + 2 + 2 + 2 = 16
7 0
3 years ago
PLEASE ANSWER ASAP !!!!
klemol [59]
At h=1 y=-2 so -2 hope it helps!
3 0
3 years ago
Find the domain of 2y-b/y
vredina [299]
(-∞,0) ∪ (0,∞) is your answer, for any other questions please ask!
4 0
3 years ago
The coordinates of ABC are (-3,4),(0,4),And (2,5). The coordinates of A’B’C’ are (-1.5,2),(0,2) And (1,2.5). How do you know tha
Gre4nikov [31]

<u>Answer:</u>

The coordinates of triangle ABC have been multiplied by a scale factor of 0.5

<u>Step-by-step explanation:</u>

By considering the given points, we can determine that the coordinates have been cut to half or each of the coordinate is divided into two. For instance:

(-3,4) is divided by 2 to give (-1.5,2)

(0,4) is divided by 2 to give (0,2)

and (2,5) is divided by 2 to give (1,2.5)

Therefore the later figure will be half in size in comparison to the first one.


6 0
3 years ago
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